Предмет: Химия, автор: DicraUA

Визначити можливі валентності елементів:
H, O, C, N, Cl, F, B, Si, S, P, Br

Ответы

Автор ответа: siafnv

0

Н: 1
О: 2
С : 4
N: 3,4
Cl: 2,4
F: 1
B: 3
Si: 4
S: 2,4,6
P: 3,5
Br: 2,4

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: aoagyys

V Vocabulary builder
Complete the text using the words and phrases in the box.
aid campaign • donation • charity foundation • fundraising • non-profit • philanthropy • sponsorship
.
.
.
.
.
set up by his friend. He always
organisation, that is one which is not operating for
When Bolat moved to Almaty, he started to help in a (1),
wanted to be a part of some kind of (2).
money, so that was a perfect opportunity for him. His first task was to organise a social (3).
promoting healthy lifestyle as a way of preventing heart diseases. He thought it would be a good idea
not only to talk about eating healthily and exercising, but also to raise people's awareness as for the
methods of giving first (4)_
to someone having a heart attack. It appeared to be a very good
concept, and he managed to find companies which offered their (5).
encouraged some private people to give (6).
very quickly. He also
for the cause. He was very happy to achieve
and collecting money would be the most difficult part of the job.
is not
that, as he thought that (7)_
In fact, he realised that there are a lot of people, who want to help others and that (8).
an old-fashioned concept.ПОМОГИТЕ ПЛЗЗ

11 месяцев назад

Предмет: Українська мова, автор: marinadacenko

Чи сприяло утворення першого національного війська УСС ідеям соборності України?

11 месяцев назад

Предмет: Физика, автор: bogdan5655

яку масу нафти може доставити поїзд із 15 цистерн якщо об.єм однієї цистерни дорівнює 40 м3? ( густина нафти 800кг/м3 )
ПЖЖЖЖЖЖ
даю 10балов

11 месяцев назад

Предмет: Физика, автор: raraaraooaookoaokoao

упростите выражение 1)2+cos2 альфа -2sin2 альфа=

6 лет назад

Предмет: Другие предметы, автор: SleziBom345

Что если смешать оранжевый и синий; красный и зелёный?

6 лет назад